Paid off 1950. In reserve 1950-1954. Sold to India 1954 and renamed Mysore. Paid off 1985.

Nigeria served with the Home Fleet until 1944, participating in North Atlantic convoys in 1940, the Lofoten raid and the hunt for German warship raiders in Icelandic waters in March 1941. In June that year she intercepted the German weathership Lauenburg off Jan Mayan Island, capturing valuable code data. She took part in operations to Spitzbergen in the summer of 1941, and on 6 September, in company with Aurora, sank Bremse off North Cape. 1942 saw her mostly employed on the Arctic convoy routes until she was detached to the Mediterranean in August for Operation Pedestal, when she was torpedoed and damaged by the Italian submarine Axum on 12 August near the Skerki bank. She was sent to the USA for repairs at Charlestown, New York, which were completed in June 1943. In 1944 Nigeria was sent to the Eastern Fleet, where, during 1944, she covered the carrier raids against Japanese controlled oil installations and airfields in the East Indies. By January 1945 she was covering the Arakan campaign, and remained in the Indian Ocean until the end of the war, when the Japanese surrendered in Malaya. Postwar she returned to Devonport to refit from December 1945 to April 1946, then served as flagship of the 6th Cruiser Squadron on the South Atlantic Station until September 1950 before returning to home waters and reserve, being used as an accommodation ship at Devonport. On 8 April 1954 her sale to India was announced, and the ship was given a major refit at Cammell-Laird, Birkenhead, between October 1954 and April 1957, after which she was formally handed over to the Indian Navy and renamed Mysore on 29 August 1957. By 1975 she was a training ship, and paid off on 20 August 1985, to be scrapped the following year.